Paper-cutting machine.



D. T. WADHAMS.

PAPER CUTTKNG MACHINE.

APPLICATION FILED MAR-8.1915- Patented Alig. 14, 1917.

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3 wwmm D. T. WADHAMS.

PAPER CUTTING MACHINE.

APPLICATION FILED MAR. 8. ms.

Patented Aug. 14, 1917.

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. 3 mum W01 7%dams jam/45 77 %aa Guam/e13 DARIUS 'I'. WADI-IAMS, 0F OSWEGO, NEW YORK, ASSIGNOR 'IO NIEL GRAY, JR., 0]? OSWEGO, NEW YORK.

PAPER-CUTTING MACHINE.

menace.

Specification of Letters Patent.

Iatented Aug. 14L, 19m.

Original application filed July 28, 1913, Serial No. 781,606. Divided and this application filed March 8, 1915. Serial No. 12,875.

To all whom it may concern Be it known that I, DARIUS T. WADHAMS, a citizen of the United. States, residing at Oswego, in the county of Oswego and State of New York, have invented new and useful Improvements in Paper-Cutting Machines, of which the following is a specification.

This invention relates to improvements in paper cutting machines which are designed to contribute to accuracy and effectiveness in the cutting operation and it consists particularly in an improved cutting stick to coact with the knife in producing a clean and uniform cut and in meansto control the cutting stick from which movement is transmitted to the stick for changing of its position from time to time so as to present a new cutting surface to be engaged by the knife. It also includes novel features of construction and mode of operation as hereinafter more fully described.

This application is a division of my application Ser. No. 7 81,606 filed July 28, 1913.

My present invention is shown in the accompanying drawings wherein one of the possible embodiments thereof is illustrated and wherein the reference characters of this description are applied to the corresponding parts in the several views.

In the drawings Figure 1 is a side elevation of a machine embodying the various features of the present invention. Fig. 2 is an enlarged vertical -cross-sectional view through the cutting stick and retaining plate. Fig. 3 is a similar view, but on a different plane. Figs. 4. and 5 taken together, illustrate in side elevation the mechanism for automatically rotating the cutting stick, the ratchet mechanism of Fig. 4 being enlarged. Fig. 6 is a vertical crosssectional view of the timing mechanism, the section being taken on line ar-a2 of Fig. 5. Fig. 7 is aplan view of the mechanism of Fig. 4; also illustrating the connection to the cutting stick and Figs. 8 and 9 are illustrative views showing the operation of the timing plate rotating devices, the parts being shown in different positions.

In the figures 1 indicates the usual supporting standard for the table 2. The standard is provided with uprights 3 having finished front surfaces 5 to coact with guide a 6 is fer-mi s g deay hea in for the usual knife-stock 8 carrying the knife-blades 10. The guide-bars 6 are bolted to the front of the standards by securing bolts 7. The parts so far referred to are of usual construction and are shown in Fig. 1 at one side of the machine only but it will be understood that the guide-way for the knife-stock is duplicated at the opposite side of the machine and that the knife is operated therein in the customary manner to descend upon the work to be out.

An important feature of this invention consists in the provision of an improved adustable cutting stick 60 of circular section. The knife is arranged to out directly over the center of the stick which is here shown positioned in a groove 61 formed in the table directly beneath the knife and extending the full width of the table. Front and rear retaining plates 6364 as best shown 1n Fig. 3 are arranged in counter part grooves formed in the table surface to retain the stick in place and properly to extend the table surface to the cutting plane. For the latter purpose the plates are desirably formed to fit around the stick as shown. The front plate is screwed solidly to the table against ledges 6565 and does not quite touch the stick. The back plate 1s not rigidly secured in position but is arranged as shown resting at its front edge upon the cutting stick and at its rear edge within its groove on the table. Retaining screws 66 for the rear plate are provided with their heads countersunk within the plate but not in contact therewith so that the plate is free to raise or lower within certain limits.

Rigidly to hold the cutting stick 60 in proper position during cutting I have provided two holding wedges, lower 68 and upper 69, fitted within the groove 61 in front of the cutting stick 60. The upper wedge, as shown, is arranged to be under the action of springs 71, secured to the under surface of front plate 63, whereby it is constantly pressed downwardly whereby the wedges coact to clamp the stick between them and the rear concave surface of the groove. The clamping arrangement is such, however, that the stick can be rotated clockwise, raising the upper wedge against the action o the springs 71, As soon as the stick stops turning the wedges will again be effective under the influence of the springs firmly to clamp the cutting stick in positlon.

Thestick will be still further clamped in.

' on the stick it opens a cleft in which the knife wedges and, moreover, is liable toleave ragged edges on the bottom sheets of the material being cut as the cleft removes their coacting support afforded by the surface of the cutting stick adjacent to the knife cutting edge. I therefore have provided means for both automatically and manually rotating the cutting stick to present a fresh cutting surface when required to obtain the best results.

The former means, whereby the cutting stick is rotated automatically, consists in the provision of ratchet and pawl connections to the stick and actuating mechanism therefor adapted to time the operation of the connections as desired. These connections to the cutting stick whereby it is rotated continu-' ously in one direction with an intermittent movement are as follows: A ratchet lever 76 is fulcrumed on pin 78 in a bracket 79 otedon a pin 86 and is engaged by a yield-.

able spring 87 bearing in a suitable socket in the arm 76.

The actuating and timing mechanism here employed to reciprocate the ratchet feed mechanismconsists in the arrangement of the counter shaft 90 having hearings in the frame 1 and in a suitable bracket 92 secured on the frame. Secured on this shaft 90, desirably within the frame, is a gear 94, in mesh with a similar gear 94. fixed on the crank-shaft 95 from which the knife is operated in the usual manner. The countershaft 90, as shown, has its frame bearing within a sleeve 96 journaled directly in the frame and having integral therewith at its inner end the timing gear 97 and at its outer end having affixed thereto the timing plate 98 formed with a notch 99. Secured to the frameby pin 100 is the stationary toothed and the timing gear 97 are provided with a difiierent number of teeth and as the engagement of the pinion with the teeth of the stationary plate controls the pinion to engage a like number of teeth on the timing" gear. during one revolution it therefore effects a'movement of the tlmlng gear, at

each revolution of the large gear, a distance a proportionate to the difference in 'teeth aforesaid.

On the outer end of counter-shaft 90 there is a cam aflixed which will be rotated with said shaft in unison with the crank shaft. A square slide 108 is arranged as-shown to operate in a vertical bearing of bracket 109 secured on the frame and this slide carries on its lower-end an antifriction roller 110 to be engaged by the cam 106 when the time plate 98 is inthe' position shown permitting the slide to enter into the slot 99. A link 111 is pivotally connected to the slide and to the arm 76 whereby on the rotation of the cam 106 the roller 110 will ride up the in cline of the cam, communicating the movement imparted thereto to the ratchet lever 76 and to the cutting stick.

Thereafter, while the roller is engaged by the outer concentric peripheral portion of the cam, the unslotted portion of the timing plate will advance into peripheral engagement with the lower end of the slide where by the slide will be withheld from return movement into engaging position which is effected under theinliuence of the retractile spring 112 on the succeeding registration of the'slide and slot 99.- The spring 112 is attached to the hooked projections 11 1115 arranged on the slide and on the bracket respectively.

The manner of rotating the timing plate 98 to permit the cam to act on the slide will beunderstood more readily by reference to Figs. Sand 9 wherein thecoaction of the teeth 102 of the controlling plate 102 and the teeth of the pinion 1.05 in effecting rotation of the timing gear is clearly illustrated by showing the parts in differentpositions. As therein shown the timing gear is rotated by the wedging cam action of the pinion teeth entering the spaces between the teeth of the timing gear and the stationary con trolling plate. A complete revolution of the timing plate and consequent feed movement of the cutting stick may desirably be effected for every twenty-five cutting strokes. To obtain this effect the controlling plate 102 might have twenty-five teeth and the timing gear twenty-four, the latter being advanced one tooth at each revolution of gear 94: and the crank-shaft.

To facilitate the insertion of the cutting stick 60 and to accommodate for its proper positioning within the groove 61 l have connected it to its rotating pinion 85 by forming a cross-slot in'the hub 85 of said pinion to which is fitted a complemental tongue or key 120 of a coupling member 121. The coupling member 121 has a similar tongue 122 at its outer end at right angles to the tongue 120 and this tongue 122 enters into a cross-slot in-the head of the screw 124 which is screwed into the end of the cutting stick 60 and acts as a driver therefor. The Oldhams coupling, consisting of the tongues and cross-slots arranged at right angles, provides for any slight lateral movements of the cutting stick and rotatively connects it to the pinion 85. A hand wheel 125 desirably is fastened to the bearing shaft 126 of the gear 85 thereby providing for turning the cutting stick and the coupling parts by hand to assist in removing or inserting the stick or to move the stick to give a new surface to be out upon.

It will be understood that the mechanism as here described, whereby the stick automaticallyjis turned a trifle at predetermined intervals, is timed to operate at a time other than during the cutting half of the stroke.

Having described my invention I claim:

1. A machine of the character described having asupporting frame and a table for the work thereon, a cutting knife and a clamp to cooperate with the knife, a cutting stick to cooperate with the knife in the cutting operation, said cutting stick being adapted to be turned with reference to the knife to present a renewed cutting surface, a plate arranged beneath the clamp to overlie the cutting stick to extend the table surface immediately adjacent to the cutting plane and above the stick and said plate being arranged to bear upon the stick under the clamping pressure rigidly to hold the stick, substantially as described. V

2. A machine of the character described having a supporting frame and a table for the work thereon, a cutting knife and a clamp to cooperate with the knife, a cutting stick to coact with the knife, fitted to a table recess, said cutting stick being adapted to be turned with reference to the knife to present a renewed cutting surface, oppositely arranged plates arranged to overlie the cutting stick to extend the table surface adj acent the cuttingplane and above the stick, one of said plates being arranged to bear upon the stick under the clamping pressure and resilient means normally to retain the stick from rotation, substantially as described. 1 i

3. A machine of the character described having a supporting frame and a table thereon for the work to be out, a cutting knife and a cutting stick to cooperate with the knife in the cutting operation, said cutting stick being arranged in a recess in the table and adapted to be turned with reference to the knife to present a new cutting surface, hold ing wedges within the table recess and adapted to secure the stick in position and springs in engagement with the wedges normally to cause the effective holding action of the wedges.

4. A machine of the character described having a supporting frame and a table thereon for the work to be cut, a cutting knife and a cutting stick to cooperate with the knife in the cutting operation, said stick being of circular cross-section and arranged within a recess in the table, means to turn the cutting stick with reference to the knife to present a new cutting surface, retaining plates arranged on the table surface forwardly and rearwardly of the knife and formed to extend the table surface immediately adjacent to the cutting plane, one of the retaining plates being supported to rest against the cutting stick whereby the latter is clamped during the cutting, springs attached to the other of said plates and holding wedges engaged by said springs and actuated thereby to secure the stick in adjusted position.

5. A machine of the character described having a cuttingknife and a cutting stick to cooperate with the knife in the cutting operation, said cutting stick being adapted to be turned with reference to the knife to present a new cutting surface, a ratchet wheel connected to the cutting stick, an actuating pawl therefor, means intermittently to move the pawl to advance the ratchet, a crank shaft for operating the knife, said intermittently operating means being operated from said crank shaft and controlling means operative to withhold said intermittently opera-ting means from operation during a predetermined plural number of cutting operations substantially as described.

6. A machine of the character described having a cutting knife and a cutting stick to cooperate with the knife in the cutting operation, said cutting stick being adapted to be turned with reference to the knife to present a new surface to be out upon, a shaft suitably journaled, an operating cam thereon, a timing plate journaled adjacent to the cam, a timing gear connected with the timing plate, a controlling plate arranged adj acent to the timing gear and having teeth thereon, a pinion rotatively connected to the cam shaft and engaging the teeth of both the timing gear and the controlling plate, and means to rotate the cam shaft and connections arranged to be engaged by the cam in and arranged adjacent to the cam, a timing gear connected to the timing plate, a stationary controlling plate arranged adjacent to the timing gear and provided with teeth on its periphery, an operating gear on the cam shaft, a pinion carried by the operating gear in engagement with the teeth of both the controlling plate and the timing gear, the number of teeth. of-said plate and gear being unequal, a reciprocal slide arranged to be engaged by both the cam and the timing plate and adapted to enter the notch in said plate to be engaged by. the

cam, a spring normally to force the slide into engagement with the cam, connections.

from the slide to thecutting stick whereby the cutting stick will be rotated slightly on the reciprocal movement of the slide and j cooperate with the knife in the cutting operation, said cutting stick being adapted to be turned with reference to the knife to present a new surface to be out upon, operatingmeans for the cutting stick whereby it is rotated and a coupling member interposed between the operating means and the cutting stick, said coupling member being keyed to the stick and operating means in right angu lar relation whereby the stick may be laterally displaced.

9. A machine of the character described having a supporting frame and a table for the work thereon, a cutting knife and a clamp to cooperate with the knife, a cutting stick to coact with the knife, fitted to a table recess, said cutting stick being adapted to be turned with reference to the knife to present a renewed cutting surface, oppositely arranged plates arranged to overlie the cutting stick to extend the table surface adjacent the cutting plane and above the stick, one of said plates being arranged to bear upon the stick under the clamping pressure, resilient means normally to retain the stick from rotation, an operating member and coupling means interposed between the operating member and the stick and adapted to permit lateral displacement of the latter substantially as described.

10, A machine of the character described having a knife and a cutting stick to cooperate with the knife in the cutting operation, said cutting stick being adapted to-be turned with reference to the knife to present a new cutting surface and automatically operating means associated therewith and operative periodically to shift the position of the stick to renew the cutting surface after a predetermined'plural number of cuts have been made, substantially as described. 1 I

11. A machine of the character described having a knife and a cutting stick to cooperate with the knife in the cutting operation, said cutting stick being adapted to be turned with reference to the knife to. present a new cutting surface, automatically operating ineans associated therewith and operative periodically to shift the position of the stick to renew the cutting surface after a prede termined plural number of cuts have been made and coupling means between the stick and the operating means and adapted to permit lateral displacement of the stick substantially as described. a

12. A machine of the character described having a knife and a cutting stick to cooperate with the knife in the cutting operation, said cutting stick being adapted to be turned with reference to the knife to present a new cutting surface, automatically operating means associated therewith and operative periodically. to shift the position of the stick to renew the cutting surface 7 after a predetermined pluralnumber of cuts h ave been made. and retaining means to engage the stick s'ubstantially as described.

13. A machine of the character described having a cutting knife and a cutting stick to cooperate in the cutting operation, said stick being adapted to be turned with reference to the knife to present a new surface to be out upon, operating connections for the cutting stick adapted to transmita rotary movement thereto and timing means associated therewith and operative to control the operation of the operating connections to shift the cutting stick periodically after a plural number of cuts have been made in each position, substantially as described.

14:. A machine of the character described having a knife and a cutting stick to cooperate with the knife in the cutting operation said cutting stick being adapted to be turned with reference to the knife to present a new surface to be cut into and automatically operating means associatedthere 1 with and operative periodically to shift the position of the stick to renew the cutting surface after a predetermined plural member of cuts have been made, said operating means being adapted to permit of the stick being manually turned independently thereof, substantially as described.

15. A machine of the character described having a knife and a cutting stick to cooperate with the knife in the cutting operation, said cutting stick being adapted to be turned with reference to the knife to present a new surface to be cut into, an operating member connected to the stick, automatically operated actuating means connected to the operating member and operative periodically to shift the stick therethrough and said actuating means being adapted to permit of the stick being manually turned independently thereof.

16. A machine of the character described having a knife and a cutting stick to cooperate with the knife in the cutting operation, said cutting stick being adapted to be turned with reference to the knife to present a new surface to be cut into, an operating member, coupling means interposed between the operating member and the stick and adapted to permit lateral displacement of the stick, automatically operated connections to the operating member adapted to permit independent movement of said member, and timing means arranged to control the operation of the connections, substantially as described.

17. A machine of the character described having a supporting frame and atable thereon for the work to be out, a cutting knife and a cutting stick to cooperate with the knife in the cutting operation, said cutting stick being arranged in a recess in the table and adapted to be turned with reference to the knife to present a new cutting surface, holding wedges within the table recess and adapted to secure the stick in position, means resiliently to engage the wedges normally to cause the effective holding action of the wedges, an operating member and coupling means between the operating member and the stick substantially as described.

18. A machine of the character described having a cutting knife and a cutting stick to cooperate with the knife in the cutting operation, said cutting stick being adapted to be turned with reference to the knife to present a renewed cutting surface, a shaft suitably journaled, an actuating element thereon, operating connections actuated thereby to rotate the stick, resilient means tending to maintain operative engagement between said connections and the actuating element and controlling means adapted to withhold said engagement for predetermined intervals and to permit of the stick being rotated by said engagement only after a plurality of cuts have been made, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

DARIUS T. WADHAMS.

Witnesses:

E. O. JOHNSON, F. E. SWEETLAND.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

